allow overriding of CVMFS_AUTO_REPAIR_MOUNTPOINT
allow overriding of CVMFS_AUTO_REPAIR_MOUNTPOINT

reneme/cvmfs,DrDaveD/cvmfs,trshaffer/cvmfs,djw8605/cvmfs,alhowaidi/cvmfsNDN,djw8605/cvmfs,Gangbiao/cvmfs,alhowaidi/cvmfsNDN,cvmfs/cvmfs,trshaffer/cvmfs,cvmfs/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,Gangbiao/cvmfs,Gangbiao/cvmfs,reneme/cvmfs,cvmfs/cvmfs,Gangbiao/cvmfs,DrDaveD/cvmfs,trshaffer/cvmfs,DrDaveD/cvmfs,alhowaidi/cvmfsNDN,trshaffer/cvmfs,reneme/cvmfs,trshaffer/cvmfs,djw8605/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,reneme/cvmfs,DrDaveD/cvmfs,alhowaidi/cvmfsNDN,alhowaidi/cvmfsNDN,cvmfs/cvmfs,djw8605/cvmfs,reneme/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs